Innovative Technology for Water Quality Monitoring

OI Analytical’s new 9210 On-line TOC Analyzers support continuous on-line monitoring of organic contaminants in water streams for regulatory compliance monitoring and optimisation of water treatment processes. Two models (the 9210e and 9210p) are offered to address a range of process situations and water monitoring applications.

The 9210e On-line TOC Analyzer is based on an innovative “reagentless” electrochemical oxidation technology OI developed for use by NASA on board the International Space Station. Special boron doped diamond (BDD)
electrodes produce hydroxyl radicals, peroxides, and ozone that efficiently oxidise and convert organic compounds into CO2 for measurement by a solidstate non-dispersive infrared (SSNDIR) detector to calculate the TOC content.

The 9210p On-line TOC Analyzer uses proven heated persulfate wet oxidation technology for applications involving regulatory compliance monitoring and reporting. Virtually all organic compounds dissolved in water can be oxidised with high efficiency by this technique. The 9210p also employs a SSNDIR detector to measure the CO2 released during wet oxidation for calculation of TOC content.

Results for each sample are shown on the touch-screen display of the 9210analyzer and can be output to a Supervisory Control and Data Acquisition (SCADA) system, PC via Ethernet connection, relay/alarm closure, or as a 4-20mA analogue signal.

The touch-screen display has a Windows® CE-based user interface to simplify instrument set-up, and access to data, trending, and diagnostic screens.

Both 9210 On-line TOC Analyzers are specifically engineered for operation in process environments. The instrument can be wall or rack mounted in indoor or shade-sheltered outdoor locations. The 9210 instrument housing has a sealed electronics compartment designed to meet NEMA 4X and IEC class IP56 standards. A locking hinged door provides access to fluid components.